Acting
- 2020HealthCheck UK LiveHimself - Presenter19 ep.
- 2019The TwinstituteHimself - Presenter6 ep.
- 2017The Human Body: Secrets of Your Life RevealedSelf3 ep.
- 2016The Doctor Who Gave Up DrugsSelf - Presenter2 ep.
- 2016How to Stay YoungSelf - Presenter5 ep.
- 2015What's the Right Diet for You? A Horizon SpecialHimself - Presenter3 ep.
- 2012Operation IcebergHimself - Presenter2 ep.
- 2012Operation Ouch!Himself - Presenter204 ep.
- 2009Horrible Histories1 ep.
- 2004Who Do You Think You Are?1 ep.
- 1966Royal Institution Christmas LecturesHimself3 ep.
- 1964HorizonPresenter2 ep.
Guest appearances
- 2014HorizonPresenter, Self - Presenter5 ep.
- 2025The One ShowSelf1 ep.
- 2024Royal Institution Christmas LecturesHimself3 ep.
- 2023Who Do You Think You Are?1 ep.
- 2020Horrible Histories1 ep.
- 2012Celebrity Mastermind1 ep.